PLATE-TYPE TUBULAR HEAT EXCHANGER Russian patent published in 1999 - IPC

FIELD: heat exchange apparatus. SUBSTANCE: heat exchanger includes stack of plates; each plate has row of holes flanged over perimeter; these flanges are received by holes of adjacent plate forming internal passages; heat exchanger has cover, inlet and outlet branch pipes. Walls of flanges have varying thickness in height; thickness of flange walls changes stepwise in height, thickness of flange walls smoothly changes in height and thickness of flange wall changes to zero. EFFECT: enhanced operational reliability. 4 cl, 4 dwg